n.mechanical device consisting of a toothed wheel or rack engaged with a pawl that permits it to move in only one direction

同義詞：rachetratch

v.move by degrees in one direction only

"a ratcheting lopping tool"

同義詞：rachet upratchet down

Forced thermal ratchets.
Experimental tunneling ratchets
Fluctuation driven ratchets: Molecular motors
Periodically Rocked Thermal Ratchets
Fluctuation driven ratchets: molecular motors. Phys Rev Lett 72(11):1766
Garrotes, springs, ratchets, and whips: putting dynamin models to the test
Chaotic Transport and Current Reversal in Deterministic Ratchets
Regular and chaotic transport in asymmetric periodic potentials: Inertia ratchets.
Asymmetric pores in a silicon membrane acting as massively parallel brownian ratchets.
Amoeba-inspired nanoarchitectonic computing implemented using electrical Brownian ratchets